Al-Shabab has stepped up attacks in Somalia's capital of Mogadishu as a show of resilience against President Hassan Sheikh Mohamud's renewed offense against the terrorist group; Large numbers of Eritrean troops have finally left the Tigray region, bringing hopes for lasting peace; And, all eyes are on U.S. Treasury Secretary Janet Yellen, who is on the second leg of her African tour, with a stop in Zambia on Monday to promote American investments.